Use a better method for determining if shared functions exist
This commit is contained in:
Chris Robinson
parent
0c8c3b16d2
commit
8dfa2560b1
@ -10,7 +10,7 @@ SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
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INCLUDE(CheckFunctionExists)
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INCLUDE(CheckLibraryExists)
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INCLUDE(CheckSharedLibraryExists)
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INCLUDE(CheckSharedFunctionExists)
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INCLUDE(CheckIncludeFile)
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INCLUDE(CheckIncludeFiles)
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INCLUDE(CheckSymbolExists)
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@ -350,7 +350,7 @@ IF(NOT HAVE_STDINT_H)
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ENDIF()
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# Windows needs winmm for timeGetTime, even if the backend is disabled
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CHECK_SHARED_LIBRARY_EXISTS(winmm timeGetTime 0 "" HAVE_LIBWINMM)
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CHECK_SHARED_FUNCTION_EXISTS(timeGetTime "windows.h;mmsystem.h" winmm "" HAVE_LIBWINMM)
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IF(HAVE_LIBWINMM)
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SET(EXTRA_LIBS winmm ${EXTRA_LIBS})
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SET(PKG_CONFIG_LIBS ${PKG_CONFIG_LIBS} -lwinmm)
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@ -402,7 +402,7 @@ SET(HAVE_WAVE 0)
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IF(ALSA)
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CHECK_INCLUDE_FILE(alsa/asoundlib.h HAVE_ALSA_ASOUNDLIB_H)
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IF(HAVE_ALSA_ASOUNDLIB_H)
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CHECK_SHARED_LIBRARY_EXISTS(asound snd_pcm_open 4 "" HAVE_LIBASOUND)
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CHECK_SHARED_FUNCTION_EXISTS(snd_pcm_open "alsa/asoundlib.h" asound "" HAVE_LIBASOUND)
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IF(HAVE_LIBASOUND OR HAVE_DLFCN_H OR WIN32)
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SET(HAVE_ALSA 1)
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SET(ALC_OBJS ${ALC_OBJS} Alc/alsa.c)
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@ -449,7 +449,7 @@ ENDIF()
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IF(SNDIO)
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CHECK_INCLUDE_FILE(sndio.h HAVE_SNDIO_H)
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IF(HAVE_SNDIO_H)
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CHECK_SHARED_LIBRARY_EXISTS(sndio sio_open 3 "" HAVE_LIBSNDIO)
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CHECK_SHARED_FUNCTION_EXISTS(sio_open "sndio.h" sndio "" HAVE_LIBSNDIO)
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IF(HAVE_LIBSNDIO OR HAVE_DLFCN_H OR WIN32)
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SET(HAVE_SNDIO 1)
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SET(ALC_OBJS ${ALC_OBJS} Alc/sndio.c)
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@ -486,7 +486,7 @@ ENDIF()
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IF(DSOUND)
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CHECK_INCLUDE_FILE(dsound.h HAVE_DSOUND_H)
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IF(HAVE_DSOUND_H)
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CHECK_SHARED_LIBRARY_EXISTS(dsound DirectSoundCreate 3 "" HAVE_LIBDSOUND)
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CHECK_SHARED_FUNCTION_EXISTS(DirectSoundCreate "dsound.h" dsound "" HAVE_LIBDSOUND)
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IF(HAVE_LIBDSOUND OR HAVE_DLFCN_H OR WIN32)
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SET(HAVE_DSOUND 1)
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SET(ALC_OBJS ${ALC_OBJS} Alc/dsound.c)
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@ -522,7 +522,7 @@ ENDIF()
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IF(PORTAUDIO)
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CHECK_INCLUDE_FILE(portaudio.h HAVE_PORTAUDIO_H)
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IF(HAVE_PORTAUDIO_H)
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CHECK_SHARED_LIBRARY_EXISTS(portaudio Pa_Initialize 0 "" HAVE_LIBPORTAUDIO)
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CHECK_SHARED_FUNCTION_EXISTS(Pa_Initialize "portaudio.h" portaudio "" HAVE_LIBPORTAUDIO)
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IF(HAVE_LIBPORTAUDIO OR HAVE_DLFCN_H OR WIN32)
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SET(HAVE_PORTAUDIO 1)
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SET(ALC_OBJS ${ALC_OBJS} Alc/portaudio.c)
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@ -543,7 +543,7 @@ ENDIF()
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IF(PULSEAUDIO)
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CHECK_INCLUDE_FILE(pulse/pulseaudio.h HAVE_PULSE_PULSEAUDIO_H)
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IF(HAVE_PULSE_PULSEAUDIO_H)
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CHECK_SHARED_LIBRARY_EXISTS(pulse pa_context_new 2 "" HAVE_LIBPULSE)
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CHECK_SHARED_FUNCTION_EXISTS(pa_context_new "pulse/pulseaudio.h" pulse "" HAVE_LIBPULSE)
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IF(HAVE_LIBPULSE OR HAVE_DLFCN_H OR WIN32)
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SET(HAVE_PULSEAUDIO 1)
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SET(ALC_OBJS ${ALC_OBJS} Alc/pulseaudio.c)
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@ -580,7 +580,7 @@ ENDIF()
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IF(OPENSL)
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CHECK_INCLUDE_FILE(SLES/OpenSLES_Android.h HAVE_SLES_OPENSLES_ANDROID_H)
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IF(HAVE_SLES_OPENSLES_ANDROID_H)
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CHECK_SHARED_LIBRARY_EXISTS(OpenSLES slCreateEngine 6 "" HAVE_LIBOPENSLES)
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CHECK_SHARED_FUNCTION_EXISTS(slCreateEngine "SLES/OpenSLES.h" OpenSLES "" HAVE_LIBOPENSLES)
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IF(HAVE_LIBOPENSLES)
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SET(HAVE_OPENSL 1)
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SET(ALC_OBJS ${ALC_OBJS} Alc/opensl.c)
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@ -1,38 +0,0 @@
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#ifdef CHECK_SHARED_FUNCTION_EXISTS
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#include <stdlib.h>
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#ifndef CALLSTACK
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#define CALLSTACK
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#endif
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#ifdef _WIN32
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#ifdef ARGSTACK
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char __stdcall CHECK_SHARED_FUNCTION_EXISTS(ARGSTACK);
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#else
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char __stdcall CHECK_SHARED_FUNCTION_EXISTS(void);
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#endif
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#else
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char CHECK_SHARED_FUNCTION_EXISTS();
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#endif
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#ifdef __CLASSIC_C__
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int main(){
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int ac;
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char*av[];
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#else
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int main(int ac, char*av[]){
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#endif
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CHECK_SHARED_FUNCTION_EXISTS(CALLSTACK);
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if(ac > 1000)
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{
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return *av[0];
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}
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return 0;
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}
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#else /* CHECK_SHARED_FUNCTION_EXISTS */
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# error "CHECK_SHARED_FUNCTION_EXISTS has to specify the function"
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#endif /* CHECK_SHARED_FUNCTION_EXISTS */
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92
cmake/CheckSharedFunctionExists.cmake
Normal file
92
cmake/CheckSharedFunctionExists.cmake
Normal file
@ -0,0 +1,92 @@
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# - Check if a symbol exists as a function, variable, or macro
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# CHECK_SYMBOL_EXISTS(<symbol> <files> <variable>)
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#
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# Check that the <symbol> is available after including given header
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# <files> and store the result in a <variable>. Specify the list
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# of files in one argument as a semicolon-separated list.
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#
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# If the header files define the symbol as a macro it is considered
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# available and assumed to work. If the header files declare the
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# symbol as a function or variable then the symbol must also be
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# available for linking. If the symbol is a type or enum value
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# it will not be recognized (consider using CheckTypeSize or
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# CheckCSourceCompiles).
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#
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_INCLUDES = list of include directories
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# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
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#=============================================================================
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# Copyright 2003-2011 Kitware, Inc.
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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MACRO(CHECK_SHARED_FUNCTION_EXISTS SYMBOL FILES LIBRARY LOCATION VARIABLE)
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IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
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SET(CMAKE_CONFIGURABLE_FILE_CONTENT "/* */\n")
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SET(MACRO_CHECK_SYMBOL_EXISTS_FLAGS ${CMAKE_REQUIRED_FLAGS})
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IF(CMAKE_REQUIRED_LIBRARIES)
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SET(CHECK_SYMBOL_EXISTS_LIBS
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"-DLINK_LIBRARIES:STRING=${CMAKE_REQUIRED_LIBRARIES};${LIBRARY}")
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ELSE(CMAKE_REQUIRED_LIBRARIES)
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SET(CHECK_SYMBOL_EXISTS_LIBS
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"-DLINK_LIBRARIES:STRING=${LIBRARY}")
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ENDIF(CMAKE_REQUIRED_LIBRARIES)
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IF(CMAKE_REQUIRED_INCLUDES)
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SET(CMAKE_SYMBOL_EXISTS_INCLUDES
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"-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}")
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ELSE(CMAKE_REQUIRED_INCLUDES)
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SET(CMAKE_SYMBOL_EXISTS_INCLUDES)
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ENDIF(CMAKE_REQUIRED_INCLUDES)
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FOREACH(FILE ${FILES})
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SET(CMAKE_CONFIGURABLE_FILE_CONTENT
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"${CMAKE_CONFIGURABLE_FILE_CONTENT}#include <${FILE}>\n")
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ENDFOREACH(FILE)
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SET(CMAKE_CONFIGURABLE_FILE_CONTENT
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"${CMAKE_CONFIGURABLE_FILE_CONTENT}\nvoid cmakeRequireSymbol(int dummy,...){(void)dummy;}\nint main()\n{\n cmakeRequireSymbol(0,&${SYMBOL});\n return 0;\n}\n")
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CONFIGURE_FILE("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
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"${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c" @ONLY)
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MESSAGE(STATUS "Looking for ${SYMBOL} in ${LIBRARY}")
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TRY_COMPILE(${VARIABLE}
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${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS
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-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_SYMBOL_EXISTS_FLAGS}
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-DLINK_DIRECTORIES:STRING=${LOCATION}
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"${CHECK_SYMBOL_EXISTS_LIBS}"
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"${CMAKE_SYMBOL_EXISTS_INCLUDES}"
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OUTPUT_VARIABLE OUTPUT)
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IF(${VARIABLE})
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MESSAGE(STATUS "Looking for ${SYMBOL} in ${LIBRARY} - found")
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SET(${VARIABLE} 1 CACHE INTERNAL "Have symbol ${SYMBOL} in ${LIBRARY}")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the ${SYMBOL} "
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"exist in ${LIBRARY} passed with the following output:\n"
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"${OUTPUT}\nFile ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c:\n"
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"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
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ELSE(${VARIABLE})
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MESSAGE(STATUS "Looking for ${SYMBOL} in ${LIBRARY} - not found.")
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SET(${VARIABLE} "" CACHE INTERNAL "Have symbol ${SYMBOL} in ${LIBRARY}")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the ${SYMBOL} "
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"exist in ${LIBRARY} failed with the following output:\n"
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"${OUTPUT}\nFile ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckSymbolExists.c:\n"
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"${CMAKE_CONFIGURABLE_FILE_CONTENT}\n")
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ENDIF(${VARIABLE})
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ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
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ENDMACRO(CHECK_SHARED_FUNCTION_EXISTS)
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@ -1,70 +0,0 @@
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# - Check if the function exists.
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# CHECK_LIBRARY_EXISTS (LIBRARY FUNCTION LOCATION VARIABLE)
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#
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# LIBRARY - the name of the library you are looking for
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# FUNCTION - the name of the function
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# ARGCOUNT - number of arguments for stdcall functions
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# LOCATION - location where the library should be found
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# VARIABLE - variable to store the result
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#
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# The following variables may be set before calling this macro to
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# modify the way the check is run:
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#
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# CMAKE_REQUIRED_FLAGS = string of compile command line flags
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# CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
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# CMAKE_REQUIRED_LIBRARIES = list of libraries to link
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MACRO(CHECK_SHARED_LIBRARY_EXISTS LIBRARY FUNCTION ARGCOUNT LOCATION VARIABLE)
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IF("${VARIABLE}" MATCHES "^${VARIABLE}$")
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SET(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
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"-DCHECK_SHARED_FUNCTION_EXISTS=${FUNCTION} ${CMAKE_REQUIRED_FLAGS}")
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IF(WIN32)
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IF(${ARGCOUNT} GREATER 0)
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SET(ARGSTACK "void*")
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SET(CALLSTACK "NULL")
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SET(CURARG 1)
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WHILE(${ARGCOUNT} GREATER ${CURARG})
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SET(ARGSTACK "${ARGSTACK},void*")
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SET(CALLSTACK "${CALLSTACK},NULL")
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MATH(EXPR CURARG "${CURARG} + 1")
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ENDWHILE(${ARGCOUNT} GREATER ${CURARG})
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SET(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
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"-D_WIN32 -DARGSTACK=\"${ARGSTACK}\" -DCALLSTACK=\"${CALLSTACK}\" ${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}")
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ELSE(${ARGCOUNT} GREATER 0)
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SET(MACRO_CHECK_LIBRARY_EXISTS_DEFINITION
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"-D_WIN32 ${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}")
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ENDIF(${ARGCOUNT} GREATER 0)
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ENDIF(WIN32)
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MESSAGE(STATUS "Looking for ${FUNCTION} in ${LIBRARY}")
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SET(CHECK_LIBRARY_EXISTS_LIBRARIES ${LIBRARY})
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IF(CMAKE_REQUIRED_LIBRARIES)
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SET(CHECK_LIBRARY_EXISTS_LIBRARIES
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${CHECK_LIBRARY_EXISTS_LIBRARIES} ${CMAKE_REQUIRED_LIBRARIES})
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ENDIF(CMAKE_REQUIRED_LIBRARIES)
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TRY_COMPILE(${VARIABLE}
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${CMAKE_BINARY_DIR}
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${CMAKE_SOURCE_DIR}/cmake/CheckSharedFunctionExists.c
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COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
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CMAKE_FLAGS
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-DCOMPILE_DEFINITIONS:STRING=${MACRO_CHECK_LIBRARY_EXISTS_DEFINITION}
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-DLINK_DIRECTORIES:STRING=${LOCATION}
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"-DLINK_LIBRARIES:STRING=${CHECK_LIBRARY_EXISTS_LIBRARIES}"
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OUTPUT_VARIABLE OUTPUT)
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IF(${VARIABLE})
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MESSAGE(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - found")
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SET(${VARIABLE} 1 CACHE INTERNAL "Have library ${LIBRARY}")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
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"passed with the following output:\n"
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"${OUTPUT}\n\n")
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ELSE(${VARIABLE})
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MESSAGE(STATUS "Looking for ${FUNCTION} in ${LIBRARY} - not found")
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SET(${VARIABLE} "" CACHE INTERNAL "Have library ${LIBRARY}")
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FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the function ${FUNCTION} exists in the ${LIBRARY} "
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"failed with the following output:\n"
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"${OUTPUT}\n\n")
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ENDIF(${VARIABLE})
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ENDIF("${VARIABLE}" MATCHES "^${VARIABLE}$")
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ENDMACRO(CHECK_SHARED_LIBRARY_EXISTS)
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